Hose coupling



Oct. 31, 1944. L powELL HosE COUPLIHG Original Filed Feb. 26, 1945 IN VEN TOR` o W54.,

Patented Oct. 31, 1944 nosa coUPLiNG Henry L. Dowell, Athens, Tex., assignor of onehalf to George Isaac Shelton, Athens, Tex.

Original application February26, 1943, Serial No. 477,282. Divided and this application July 21, 1943, Serial No. 495,641

1 Claim.

This invention relates, to a coupling device for conduits and the like and it consists in the constructions, arrangements and combinations herein described and claimed.A

It is the cardinal object of the invention to provide a quick acting coupling device whereby a pair of conduits or fittings may be securely interconnected, forming a liquid or fluid-tight connection therebetween, and is particularly useful in constructions as set forth in pending application on nozzle for Fire hose, led February 26, 1943, Serial No. 477,282, and of which thisapplication is a division.'

It is also a particular object of the invention to provide a coupling device in which connection of the parts may be accomplished without use of screw-threaded ttings and in which the couplings may be accomplished without the use of tools.

Additional objects, advantages and features of invention will be apparent from the following description and accompanying drawing, wherein Figure 1 is a side elevation of the coupling installed upon a fire hose nozzle.

Figure 2 is a verticalsection through the coupling, the nozzle being shown in elevation.

Figure 3 is a cross section on the line 3--3 of Figure 1, illustrating the lockedposition of the coupling.

Figure 4 is a similarvview illustrating the unlocked position of the coupling device.

There is illustrated a discharge nozzle generally indicated by the reference character I0, which has been chosen as the device upon which the coupling device,` is to be installed. The interior structure of the nozzle I is immaterial to the understanding of the coupling, it being understood that a liquid iluid is to be suppliedto the nozzle for discharge through the discharge tip II.

The nozzle I0 has an elbow I2 at its upper end to which the coupling device I3 is to be installed. Obviously, the elbow I2 could be an ordinary straight or otherwise shaped tting. A nipple i4 is employed, cylindrical in shape, one end of which is threaded as at I5 for engagement with the threads of the elbow fitting I2.

Rotatably mounted upon the nipple I4 there is a body member I6 of substantial thickness, and within the body member, at diametrically opposite sides there are formed arcuate tapering passage-ways I1, the passage-ways tapering in opposite directions. Thenipple I4 is provided with diametrically opposite openings I8 in which respective pins I9 are slidably mounted. The pins I9 have a head 20 and between the heads and a seat formed around the openings I8 respective helical springs 2l are interposed tending to draw the pins from the openings. The heads or" the pins transversevthe slots under rotation of the body member I6 and in clockwise rotation of the body member, the reduced portion of the passage-ways I1. will contact the heads 20, forcing the pins inwardly through the openings I8, downwardly behind a flange 22 of a nozzle 23, drawing the iiange into snug engagement with a gasket 24 of the nipple I4. The device will thus be effectively coupled'to the nozzle 23. Counter-clockwise rotation of the bodyv member I6 will bring the greater depth of the passage-ways I1 into operative position with the heads of the pins, allowing the springs to func- 'tion and withdraw the, pins from engagement with the flange 22, and thus allow the nozzle 23 lto be disconnected from the nipple I 4. A closure 'plate 25 is employed to house the pins and springs and also prevent ingress of foreign matter which might affect proper operation of the coupling device. i

While I have shown and described my con#- struction, this is by way of illustration only, and I consider as my own all such modiiications in construction as fairly fall within the scope of the appended claims.

I claim:

A fire hose coupling comprising a nipple for attachment to a nozzle, the nipple having an annular interior shoulder, a compression washer engaged with the shoulder,` said nipple further ,having a plurality of radial openings in advance of the shoulder and compression washer, a rotatable member on thenipple having arcuate tapering slots opening upon the nipple, a pin engaged in respective openings of the nipple, each pin having a head disposed in respective slots, a spring interposed between the head of each pin and said nipple, whereby the pins will be retracted at one position of the rotatable member, a fitting complemental to the interior diameter of the nipple and having an annular flange adapted to abut said Washer, said pins being projectable through the openings to positions rearwardly of the flange in one direction of rotation of said rotatable member.

HENRY L. DOWELL. 

